Persist normalized evidence sources, findings, limitations, and confidence.
AI agents use record_evidence to create or update resources in Decision State MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Decision State MCP environment.
The tool writes/stores data (evidence, findings, limitations, confidence scores) to persistent state. This is a reversible write operation — it creates or updates records in the decision state store. No code execution, deletion, or financial operations are involved. Severity is low because misuse would only result in incorrect or misleading evidence records being stored, with limited blast radius.
From the tool's definition Persist normalized evidence sources, findings, limitations, and confidence.
Attacks that exploit this kind of access
Persist normalized evidence sources, findings, limitations, and confidence. It is categorised as a Write tool in the Decision State MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Decision State MCP server in PolicyLayer and add a rule for record_evidence: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Decision State MCP. Nothing to install.
record_evidence is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the record_evidence rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for record_evidence. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
record_evidence is provided by the Decision State MCP server (koolercat/mcp-state). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
record_evidence is one line of Decision State's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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